neither
Monothestic means that you/religion believe in one god
Judaism was the first monotheistic religion.
Taoism is NOT a religion,It's a way of life.The "tao" is everything.
I am a Zoroastrian and i know for a fact it is considered old because it is the oldest monothestic religion. Monothestic meaing beliveing in one god. Our religion has still many old traditions and if anyone wants to know about any of it, please do ask me and ill gladly answer :)
Buddhism which is a philosophy, not a religion. He had no religion
Zoroastrianism one of the world's oldest monothestic religions, dated to 3500BC.
Buddhism is the dominant religion of Vietnam.
Technically Buddhism is not a religion and it has no god.
Buddhism does not require a book.
Buddhism is the religion. Buddhist practice Buddhism.
Some of the SECTS of Buddhism are Theravada, Mahayana, Tibetan, and Zen Buddhism. Buddhism is a religion, and therefor it has no "religions".